Swift NSKeyedArchiver: Do custom members of an NSCoding-conformant class need to conform to NSCoding as well?

Question

Say I have this Swift class:

class Foo: NSObject, NSCoding
{
    var stringMember: String
    var intMember: Int
    var customObjectMember: CustomObject
    //conforms with encode and required init...
}

I know that "Foo" has to conform to NSCoding so I can archive it. Does the member "customObject" also have to conform to NSCoding/NSObject or can it be a regular Swift class?

Answer 1

The answer is "yes". Custom object members must also conform to NSCoding.